#403F52#403F52

#403F52 is a dark, muted blue. Relative luminance 0.053; OKLCH L 37.6% C 0.032 H 287.1°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#403F52
RGB	rgb(64, 63, 82)
HSL	hsl(243, 13%, 28%)
HSV	hsv(243, 23%, 32%)
CMYK	cmyk(22%, 23.2%, 0%, 67.8%)
CIE-LAB	lab(27.45, 5.12, -11.27)
CIE-LCH	lch(27.45, 12.37, 294.43°)
OKLab	oklab(37.65% 0.0095 -0.0308)
OKLCH	oklch(37.65% 0.032 287.1)
XYZ	xyz(5.4145, 5.2541, 8.7099)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F52 #51523F

analogous

#3F4752 #403F52 #493F52

triadic

#403F52 #52403F #3F5240

tetradic

#403F52 #523F47 #51523F #3F5249

square

#403F52 #523F47 #51523F #3F5249

split-complementary

#403F52 #52493F #47523F

monochromatic

#0E0D11 #25242F #403F52 #5B5A75 #777696

Accessibility & contrast

On white

10.24

#403F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#403F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F52

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F52	#FFFFFF	#000000	##FFFFFF
##403F52	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A4153

Deuteranopia (green-blind)

#3A4051

Tritanopia (blue-blind)

#3C4245

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #403f52;
/* rgb */ color: rgb(64, 63, 82);
/* oklch */ color: oklch(37.6% 0.032 287.1);

Tailwind

colors: {
  custom: {
    50: '#757482',
    500: '#403f52',
    950: '#000000',
  },
}

SCSS

$custom: #403f52;
$custom-light: #757482;
$custom-dark: #000000;

JSON

{
  "hex": "#403f52",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 82
  },
  "hsl": {
    "h": 243.158,
    "s": 13.103,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37645,
    "c": 0.03225,
    "h": 287.1
  },
  "luminance": 0.05254
}

Semantic roles & 50–950 ramp

primary

#403F52

secondary

#80816C

accent

#B672B2

background

#F7F7F7

surface

#EDEDEE

border

#C8C8C9

text

#08080A

muted

#7B7B7C

Preview Lab

Preview with #403F52

Body copy rendered with the generated semantic roles for this colour.

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